기관지천식 환자와 정상대조군 간의 고해상 CT 소견의 비교

최교창 대한영상의학회 1996 대한영상의학회지 Vol.34 No.6

Purpose : The purpose of this study was to compare high-resolution CT(HRCT) findings of asthmatic and control subjects, and to evaluate the relationship between HRCT findings and clinical features in asthmatic subjects. Materials and Methods : Using HRCT, we studied 16 asthmatic and 16 control subjects. We analyzed the ratio of bronchial wall thickeness, the frequency of bronchial dilatation, the presence of emphysema, centrilobular nodule, and pulmonary infiltration in two groups. In addition, we assessed HRCT findings of asthmatic patients for correlation with clinical findings and the pulmonary function test. Results : The ratio of bronchial wall thickness of 16 asthmatic subjects (0.48 $\pm$ 0.08) and 16 control subjects(0.40 $\pm$ 0.08) was significantly different in statistical analysis (P<0.001). Bronchial dilatation was seen in 53(32%) of 165 bronchi in the asthmatic group and in 16(13%) of 119 bronchi in the control group, which was statistically significant (p<0.01). Among 16 asthmatic patients, there were eight cases of emphysema, two of centrilobular nodule, and four of pulmonary infiltration. The ratio of bronchial wall thickeness of eight asthmatic subjects with emphysema(0.47 $\pm$0.08) and eight such subjects without emphysema(0.49 $\pm$ 0.09) was not significantly different when statistically analysed. In asthmatic patients, HRCT findings did not correlate with clinical findings and the pulmonary function test. Conclusion : On high-resolution CT, the ratio of bronchial wall thickness and the frequency of bronchial dilatation between asthmatic and control subjects are significantly different.

위암의 병기결정에 있어서 이중시기 나선식 CT의 유용성

최교창 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.1

Purpose: To evaluate the usefulness of two-phase spiral CT in the staging of gastric carcinoma. Materials and Methods: The author preformed two-phase spiral CT in 49 patients with gastric carcinomas surgically and pathologically proven after endoscopic biopsy. CT scans were obtained after ingestion of 800-1000mL of water. In all 49 patients, two-phase spiral CT findings of gastric carcinoma were retrospectively evaluated and correlated with surgical and pathological findings. Results: The author correctly detected 15(83.3%) of 18 early gastric carcinomas and 31(100%) of 31 advanced gastric carcinomas by two-phase spiral CT. The overall detection rate of gastric carcinomas was 93.9%(46 of 49 cases). The detection rate of early gastric carcinoma was 100%(5 of 5 cases) among elevated lesions and 76.9%(10 of 13 cases) among flat or depressed lesions. With regard to the depth of tumor invasion, there was good correlation between CT findings and pathologic findings in 28 of 49 cases(57.1%). Overstaging occurred in 24.5%(12 of 49 cases) and understaging in 18.4%(9 of 49 cases). In lymph node staging, good correlation between CT findings and pathologic findings was noted in 33 of 49 cases(67.3%). Understaging occurred in18.4%(9 of 49 cases) and overstaging in 14.3%(7 of 49 cases). All of liver metastases(3 cases) and peritoneal carcinomatosis(1 case) were correctly diagnosed by two-phase spiral CT. Conclusion: In the staging of gastric carcinoma, two-phase spiral CT is useful in the deterction of early gastric carcinoma and distant metastasis. However, for determining the depth of tumor invasion and for the evaluation of metastasis to lymph node its usefulness is limited. Further research using various analytic approaches will therefore be necessary.

급성 천공성과 비천공성 충수염의 감별: 고해상력 초음파의 유용성

최교창 대한영상의학회 2011 대한영상의학회지 Vol.65 No.1

Purpose: To evaluate the usefulness of high-resolution ultrasonography (US) for the differentiation of acute perforated appendicitis from non-perforated appendicitis. Materials and Methods: The high-resolution US features in 96 patients (49 males, 47 females; mean age, 33.8 years; age range, 4-80 years) with pathologically proven acute appendicitis were evaluated. The following US findings were evaluated for differentiation of acute perforated appendicitis from non-perforated appendicitis: circumferential loss of the echogenic submucosal layer, periappendiceal fluid collection, disruption of the serosal layer, asymmetrical wall thickening, maximum overall diameter > 10.5 mm, and the presence of appendicoliths. The sensitivity and specificity of the US features in the diagnosis of acute perforated appendicitis were calculated. Results: All of the US findings, except for appendicoliths, were significantly more common in the acute perforated appendicitis group (p < 0.001). The sensitivity of circumferential loss of the echogenic submucosal layer, periappendiceal fluid collection, disruption of the serosal layer, asymmetrical wall thickening, maximum overall diameter > 10.5 mm, and the presence of appendicoliths was 85.4, 73.2, 68.3, 70.7, 80.5, and 36.6%, respectively, while the specificity was 65.5, 89.1, 96.4, 98.2, 81.8, and 80.0%, respectively. Conclusion: High-resolution US was found to be useful for differentiating acute perforated appendicitis from non-perforated appendicitis. 목적: 급성 천공성과 비천공성 충수염을 감별하는데 있어 고해상력 초음파의 유용성을 알아보고자 하였다. 대상과 방법: 병리학적으로 급성 충수염으로 확진된 96명(남자 49명, 여자 47명; 평균 연령, 33.8세; 연령범위, 4~80세)의 환자를 대상으로 고해상력 초음파 소견을 평가하였다. 고해상력 초음파로 전반적인 점막하층의 소실, 충수돌기주위 체액저류, 장막층의 파열, 비대칭적 벽 비후, 10.5 mm 초과의 최대단면직경, 충수분석 등의 유무를 알아보고 급성 천공성과 비천공성 충수염을 감별할 수 있는지를 평가하였으며 급성 천공성 충수염을 진단하는 데 있어 초음파 소견의 민감도와 특이도를 분석하였다. 결과: 충수분석을 제외한 모든 초음파 소견(전반적인 점막하층의 소실, 충수돌기주위 체액저류, 장막층의 파열, 비대칭적 벽 비후, 10.5 mm 초과의 최대단면직경)이 급성 천공성 충수염 환자군에서 통계학적으로 유의하게 더 많이 관찰되었다(p < 0.001). 전반적인 점막하층의 소실, 충수돌기주위 체액저류, 장막층의 파열, 비대칭적 벽 비후, 10.5 mm 초과의 최대단면직경, 충수분석 등의 민감도는 각각 85.4%, 73.2%, 68.3%, 70.7%, 80.5%, 그리고 36.6%였고, 이들 모든 초음파 소견의 특이도는 각각 65.5%, 89.1%, 96.4%, 98.2%, 81.8%, 그리고 80.0%였다. 결론: 고해상력 초음파는 급성 천공성 충수염과 비천공성 충수염을 감별하는 데 있어 유용하였다.

혈전이 동반된 간외 간문맥 동맥류

최교창 순천향의학연구소 2010 Journal of Soonchunhyang Medical Science Vol.16 No.1

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담낭 선근종증의 CT소견

최교창,임한혁,고은석 최신의학사 1997 最新醫學 Vol.40 No.11

충수돌기 표본의 고해상력 초음파: 급성 비천공성과 천공성 충수염의 감별

최교창,김숙,임한혁,이상진,양승부,이승우,이혜경,권귀향,신형철,김일영 대한초음파의학회 2007 ULTRASONOGRAPHY Vol.26 No.3

PURPOSE : To analyze surgical specimens from patients with acute non-perforated and perforated appendicitis using high-resolution ultrasonography (US), and to correlate the US features with the pathologic findings. MATERIALS and METHODS : One hundred and six surgical appendix specimens obtained from patients with suspected acute appendicitis were evaluated. The following US features were evaluated for differentiating acute non-perforated appendicitis from perforated appendicitis: circumferential loss of the echogenic submucosal layer, disruption of the serosal layer, asymmetrical wall thickening, the sum of opposing walls ≥ 9 mm and the presence of appendicoliths. The sensitivity and specificity of the US findings for diagnosing perforated appendicitis were determined. RESULTS : All US features were detected significantly more often in the perforated appendicitis group of specimens. The disruption of the serosal layer was the most significant independent predictor of perforation (p < .001). The sensitivity for circumferential loss of the echogenic submucosal layer, disruption of the serosal layer, asymmetrical wall thickening, wall thickness ≥ 9 mm, and the presence of appendicoliths individually was 84.6%, 69.2%, 61.5%, 73.1% and 46.2%, respectively. The specificity for all of these findings was 86.3%, 98.7%, 95.0%, 85.0% and 85.0%, respectively. CONCLUSION : High-resolution US of appendiceal specimens was very useful for differentiating acute non-perforated from perforated appendicitis. 목적 : 급성 비천공성과 천공성 충수염이 있는 충수돌기 표본에 대하여 생체 외 고해상력 초음파를 시행하여 초음파 소견의 차이를 알아보고 조직학적 양상과 비교 연구하고자 하였다. 대상 및 방법 : 급성 충수염이 의심되는 환자에서 수술로 절제된 106예의 충수돌기 표본을 대상으로 하였다. 초음파에서는 충수돌기의 최대단면직경과 벽두께를 측정하였고, 전반적인 점 막하층의 반향성 소실, 장막층의 파열, 비대칭적 벽 비후, 9 mm 이상의 벽두께, 충수분석등의 유무를 관찰하여 급성 비천공성과 천공성 충수염을 감별할 수 있는 초음파 소견을 알아보았고 천공성 충수염을 진단할 수 있는 초음파 소견의 민감도와 특이도를 분석하였다. 결과 : 모든 초음파 소견(전반적인 점막하층의 반향성 소실, 장막층의 파열, 비대칭적 벽 비후, 9mm 이상의 벽두께, 충수분석)이 천공성 충수염군에서 통계학적으로 유의하게 더 많이 보 였고 (p < .001), 장막층의 파열이 천공을 예측하는 가장 유의한 독립적인 예측인자였다 (p < .001). 전반적인 점막하층의 반향성 소실, 장막층의 파열, 비대칭적 벽 비후, 9 mm 이상 의 벽두께, 충수분석 등의 민감도는 각각 84.6, 69.2, 61.5, 73.1, 그리고 46.2%였으며, 이러한 모든 초음파 소견의 특이도는 각각 86.3, 98.7, 95.0, 85.0, 그리고 85.0%였다. 결론 : 충수돌기 표본의 고해상력 초음파는 급성 비천공성 충수염으로부터 천공성 충수염을 감별하는데 있어 매우 유용하였다.

Solid Pseudopapillary Tumor of the Pancreas in Child: A Case Report

최교창,한덕종,김송철,김지훈 순천향대학교 순천향의학연구소 2011 Journal of Soonchunhyang Medical Science Vol.17 No.1

Solid pseudopapillary tumor of the pancreas is a very rare form of childhood pancreatic tumor. We report the case of an 11-year-old girl having a solid pseudopapillary tumor of the pancreas presenting with left upper abdominal pain. Imaging studies showed the lesion to be an ovoid solid mass arising from the body and the tail of the pancreas. The tumor was surgically resected and was histopathologically diagnosed as a solid pseudopapillary tumor.

Influences of External Ionic Crosslinking Agents on the Surfacial, Mechancial Properties and Water Resistance of EVA Emulsion

최교창,강창기,고재송,이은경 한국공업화학회 2007 한국공업화학회 연구논문 초록집 Vol.2007 No.1

Ehthalpy Profile-Cure State Relationship of Compounded Rubber by DSC

최교창,김준형,고재송,윤진민,김수연,황유경 한국공업화학회 2007 한국공업화학회 연구논문 초록집 Vol.2007 No.-

Cure Characteristics and Physical Properties of Hydrogenated Acrylonitrile Butadiene Rubber Compound

최교창,김준형,윤진민,김수연 한국공업화학회 2006 한국공업화학회 연구논문 초록집 Vol.2006 No.-